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<title>3.29 new -- Creation of runtime internal objects</title>
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<H1><A NAME="SECTION0052900000000000000000">
3.29 <tt class="module">new</tt> --
         Creation of runtime internal objects</A>
</H1>

<P>
<A NAME="module-new"></A>

<P>
The <tt class="module">new</tt> module allows an interface to the interpreter object
creation functions. This is for use primarily in marshal-type functions,
when a new object needs to be created ``magically'' and not by using the
regular creation functions. This module provides a low-level interface
to the interpreter, so care must be exercised when using this module.
It is possible to supply non-sensical arguments which crash the
interpreter when the object is used.

<P>
The <tt class="module">new</tt> module defines the following functions:

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-793' xml:id='l2h-793' class="function">instance</tt></b>(</nobr></td>
  <td><var>class</var><big>[</big><var>, dict</var><big>]</big><var></var>)</td></tr></table></dt>
<dd>
This function creates an instance of <var>class</var> with dictionary
<var>dict</var> without calling the <tt class="method">__init__()</tt> constructor.  If
<var>dict</var> is omitted or <code>None</code>, a new, empty dictionary is
created for the new instance.  Note that there are no guarantees that
the object will be in a consistent state.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-794' xml:id='l2h-794' class="function">instancemethod</tt></b>(</nobr></td>
  <td><var>function, instance, class</var>)</td></tr></table></dt>
<dd>
This function will return a method object, bound to <var>instance</var>, or
unbound if <var>instance</var> is <code>None</code>.  <var>function</var> must be
callable.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-795' xml:id='l2h-795' class="function">function</tt></b>(</nobr></td>
  <td><var>code, globals</var><big>[</big><var>, name</var><big>[</big><var>, argdefs</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt>
<dd>
Returns a (Python) function with the given code and globals. If
<var>name</var> is given, it must be a string or <code>None</code>.  If it is a
string, the function will have the given name, otherwise the function
name will be taken from <code><var>code</var>.co_name</code>.  If
<var>argdefs</var> is given, it must be a tuple and will be used to
determine the default values of parameters.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-796' xml:id='l2h-796' class="function">code</tt></b>(</nobr></td>
  <td><var>argcount, nlocals, stacksize, flags, codestring,
                       constants, names, varnames, filename, name, firstlineno,
                       lnotab</var>)</td></tr></table></dt>
<dd>
This function is an interface to the <tt class="cfunction">PyCode_New()</tt> C
function.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-797' xml:id='l2h-797' class="function">module</tt></b>(</nobr></td>
  <td><var>name</var>)</td></tr></table></dt>
<dd>
This function returns a new module object with name <var>name</var>.
<var>name</var> must be a string.
</dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
  <td><nobr><b><tt id='l2h-798' xml:id='l2h-798' class="function">classobj</tt></b>(</nobr></td>
  <td><var>name, baseclasses, dict</var>)</td></tr></table></dt>
<dd>
This function returns a new class object, with name <var>name</var>, derived
from <var>baseclasses</var> (which should be a tuple of classes) and with
namespace <var>dict</var>.
</dl>

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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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